DEVICE FOR AND METHOD OF DETERMINING RESIDENCE TIME DISTRIBUTIONS

摘要

A method of determining a residence time distribution comprises mixing a molding batch (104) and a tracer (105), wherein the tracer has a ferroelectric curie temperature above 120 °C, and transmitting the mixture through a capacitor (107). Further, the method comprises measuring a capacitance of the capacitor, and determining a residence time distribution based on the measured capacitance. In particular, the ferroelectric curie temperature of the tracer may be above 150 °C and preferably the ferroelectric curie temperature of the tracer is above 200 °C.